A self-professed foodie, Carl Warner spends a lot of time wandering around farmers’ markets and specialty stores. He was scoping out some produce when it struck him: Portobello mushrooms look really odd. “I held them up to the light and thought, ‘These look like trees from an alien landscape,’” he says.

That’s where it started. For more than a decade, the artist and advertising photographer has been building miniature, edible worlds on a table in his London studio. The